kWh Energy Savings Calculator

After making the various calculations for the Saving Computer Energy article, I realized that it would be helpful to have a tool that could easily calculate kWH (kilowatt hour) and cost values. I searched all over the internet and was not able to find a simple tool that really did what I needed. That’s why I made this kWh Energy Savings Calculator. It allows you to easily calculate the cost and kilowatt hour value of various common electronic devices or input your own values. Various inputs can be put into the calculator including:

Normal Energy Use: The amount of watts that a particular device uses during normal use. This also includes how many hours and minutes the device is being used for.

Standby Energy Use: The amount of watts that a particular device uses when plugged in, but not in use. This also includes how many hours and minutes the device is being used for.

Cost: The cost per kWh of electricity.

In order to find how many watts a particular electronic devices uses, you can:

Select a Common Electronic Devices from the list below. It will fill in the normal energy use with average wattage and hours values for the device selected.

Check the device’s manual or online spec.

Do a search for the electronic model number along with the term watts. Various sites usually contain the wattage information for just about anything.

Contact the manufacturer if all else fails.

To find your energy cost, just look at you monthly electric bill or select your state for an average kwh cost.

Normal Daily Use

Common Electronic Devices

Watts Used:

Hours Used:

hours

Minutes Used:

minutes

Kilowatt-Hours:

.240 kWh

Standby/Sleep Use

Watts Used:

Hours Used:

hours

Minutes Used:

minutes

Kilowatt-Hours:

0 kWh

Cost Per kWh:

$

Cost of kWh Per State

kWh Data

Cost Data

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Comments

Having one of those energy use meters would make your calculator very useful for any appliance we use. You can work out the consumption by measuring the difference between energy consumption when a device is switched on and when it’s switched off.

I think that besides that light bulbs it should have an option for compact flourescent light bulbs, the energy saving ones. Other than that, this website is crazy helpful, the info it gives is helping my friend and I with our science fair project. 1st place, here we come!

I recently replaced my 36-year-old HVAC system with a new high efficiency dual-fuel (16.5 SEER heat pump/95% natural gas heat) system. I have saved my energy usage figures from the last 2.5 years. Is there a calculation available that will show money saved when compensated for weather data (heating and cooling degree hours or degree days)? If you do, please respond to my email address. Thanks.